LNU2W392MTEG

The LNU2W392MTEG is an aluminum electrolytic capacitor in a screw-terminal (stud bolt mount) radial can package designed for high-voltage industrial applications. Built for harsh operating environments, it supports continuous operation up to 105°C and is intended for inverter circuitry and other high-frequency regenerative power circuits.

This part combines a 3.9 mF capacitance with a 450 V rated voltage, high ripple-current capability, and a long high-temperature load life—making it suitable for inverter power supplies, AC servomotor regenerative circuits, and other industrial power-electronics designs that require robust charge–discharge handling.

Key Features

• Capacitance & Voltage: 3.9 mF nominal capacitance with a 450 V rated voltage for high-voltage energy storage in power electronics applications.
• High-temperature endurance: Designed for –40°C to +105°C operation with a specified load life of 5000 hours at 105°C when subjected to rated ripple current and DC bias.
• High ripple-current capability: Rated ripple current of 16.3 A at 120 Hz and 22.82 A at 10 kHz to support high-frequency and high-current conditions.
• Screw-terminal, stud bolt mount: Radial can with screw terminals and stud bolt mounting for secure, low-impedance connections in industrial assemblies.
• Charge–discharge durability: Engineered to cope with high-speed charge–discharge loading; series endurance testing includes 50 million charge–discharge cycles (ΔV ≈ rated voltage ±0.3, 3 Hz).
• Leakage and insulation characteristics: Leakage current after 5 minutes is no more than 3√CV μA or 5 mA (whichever is smaller); insulation resistance exceeds 100 MΩ at DC 500 V between terminal and bracket.
• Robust voltage isolation: Voltage withstand test of AC 2500 V for 1 minute between terminal and bracket as specified in the datasheet.
• RoHS compliance: Meets RoHS directive requirements (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial inverter power supplies: Energy storage and smoothing in inverter circuitry where high DC voltage and long-term thermal endurance are required.
• AC servomotor regenerative circuits: Handling high-frequency regenerative voltages and fast charge–discharge cycles in motor drive systems.
• High-frequency power electronics: Bulk capacitance and ripple handling for general inverter and regenerative power stages operating at elevated frequencies.
• Industrial power modules: Robust stud-mount connectivity and high-temperature life make this capacitor suitable for rugged power assemblies and cabinet-mounted modules.

Unique Advantages

• High-voltage capability: 450 V nominal rating (series rated up to DC 525 V) supports higher-voltage power designs without upsizing.
• High ripple-current handling: Specified ripple current values at 120 Hz and 10 kHz allow reliable operation under heavy AC stress and high switching frequencies.
• Long high-temperature life: 5000 hours at 105°C under rated ripple current provides predictable aging and maintenance planning for industrial systems.
• Designed for fast charge–discharge: Proven endurance against repeated charge–discharge cycles, supporting regenerative and dynamic energy applications.
• Secure mechanical and electrical connection: Screw terminals and stud bolt mount facilitate low-impedance, reliable installations in power racks and assemblies.
• Standards-based electrical safety metrics: Leakage current limits, insulation resistance, and AC voltage proof values are specified to support system-level design validation.

Why Choose LNU2W392MTEG?

The LNU2W392MTEG from Nichicon is positioned for industrial power-electronics designs that demand a combination of high-voltage capability, strong ripple-current performance, and sustained operation at elevated temperatures. Its screw-terminal, stud-mount package and specified endurance characteristics make it appropriate for inverter power supplies, regenerative motor drives, and other applications requiring reliable bulk capacitance and frequent charge–discharge cycling.

For engineers and procurement teams designing resilient industrial power systems, this capacitor offers verifiable electrical and mechanical specifications—supporting long-term reliability planning and straightforward integration into high-voltage modules.

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